### RULE 2020 EXEMPTIONS (Adopted September 19, 1991, AmendedJuly 16, 1992, Amended December 17, 1992, Amended October 21, 1993, Amended July 21, 1994, Amended September 17, 1998)

1.0 Purpose This rule specifies emissions units that are not required to obtain an Authority to Constructor Permitto Operate. This rule also specifies the recordkeeping requirements to verify the exemption and outlines the compliance schedule for emissions units that lose the exemption after installation.
2.0 Applicability This rule shall apply to any source operation that emits or may emit air contaminants.
3.0 Definitions
3.1 Clean Produced Water: as dermed in Rule 1020.
3.2 Emissions Unit: as dermed in Rule 2201. an identifiable process, operlRion, or piece ofprocess equipment sHch as a source operatioH:, which efIlits or may emit, or resulEs iR the

### efIlissions of any aiT contami:nantdiTectly or as fugitive efIlissiofl5.
3.3 HAP: a hazardous air pollutant listed in Section 112(b) ofthe federal Clean Air Act or the lists prepared by the California Air Resources Board pursuant to Section 44321 of the California Health and Safety Code that have OEHHA approved health risk values.
3.4 HAP Source: an emissions unit that is subject to an emissions limitation, a performance standard, workpractice standard, or other requirements under an applicable provision ofany ofthe following regulations:
3.4.1 National Emission Standards for Hazardous Air Pollutants (NESHAPS), Maximum Achievable Control Technology (MACT) standard, or other requirements promulgated pursuant to section 112 of the federal Clean Air Act (42 U.S. Code, 7401, et.seq).

SJVUAPCD 

### 2020 - 1 AdoptedAmendments to Rule 2020 9/17/983.4.2 Airborne Toxic Control Measures (ATCM) adopted by the California Air Resource Board in accordance with requirements ofsection 39658 ofthe California Health and Safety Code.
3.4.3 A rule contained in Regulation VII (Toxic Air Pollutants) ofthe District Rules and Regulations.
3.5 Low Emitting Unit: 

### An emissionunit with uncontrolled emissions rate ofany single air contaminant, otherthan 

### HAP, 3.4.1 less than orequal to two pounds perday or, 3.4.2 ifgreater than two pounds per day, is less than or equal to 75 pounds per year. 3.6 NSPS Source: an emissions unit that is subject to an emissions limitation, performance standard, workpractice standard, or otherrequirements under an applicable provision of40CPR, Part 60, New Source Performance Standards (NSPS).
3.7 Portable Emissions Unit: as defined in Rule 2280. afty emissioftS unit that, by itselfor in or Oft a piece ofequipmeftt, is portable, meaniflg desigB:ed 

### to be and capable ofbeiRg carried or FROved from ORe locatioftto aROtfler. IRdicatioftSof portability iRclude, but are ROt limited to, wheels, skids, carrying handles, doUy, trailer, platform or mouftting. An emissioft umt is ROt portable if: 

### 3.6.1 the emissioftSunit remai:H:s or 

### vAll remam at a locatioft for more thaft 

### 6 coftSeeutive moftths. (Any emissioftSunit, such as a back

### up or steRd by unit, that replaces aft emissioftS unit at a 10catiOfl: aRd is iRteRded to performthe same fimctioft as the unit being replaced vAll be included 

### in calculating the coftSecuti'/e time period. 

### In that case, the cumulative time ofboth emissioftS units, iB:eluding thetime bet\veeft the remo'lal ofthe original unit aoo i:H:staUatioft ofthe replaeemeftt unit, would be couftted towards thecoftSecuti"l'e resideftCe time period.); or 3.6.2 theemissioftSunit remai:H:s or 

### 'NiH remain at a locatioft for less theft 6 coftSecuti'f'e moB:tb:s 'Nhere such a periodrepreseftts the full leRgth of ROrmal afll1ual source operatioftS at thestationary source that resides at R fixed locatioft for more thaft 6 consecutive moftths such as a seasoool source; or

/ SJVUAPCD 2020 - 2 AdoptedAmendments to Rule 2020 9/17/983.6.3 the emissions Hait is remo¥ed from one locatioa for a f3eriod aOO thea returned to 

### the Stlfl'le locatio a 

### in an attempt to circllllWeat 

### theportl:tble eqHipmeat residenee time reqHiremeat.
The period d1:lrmg whicH the emissions 1:lait is maintained at a storage facility sHall be excl1:ldedfrom detefllli.ffing the abo¥e resideacy reqHiremefltS. 

### 3.8 Reconstructed Stationary Source: a Reconstructed Stationary Source as dermed in Rule 2201, or a Reconstruction as dermed in 40 CFRPart60 Subpart A. 3.9 Roadmix: a mixture oftank

### bottoms from crude oil storage tanks, material from crude oil spills , or other crude-oil-eontaining soil mixed with aggregates and soils, that is used as a base or cover material for roads, parking lots, benns, tank and well locations, or similar applications. 3.10 Routine Replacement: as dermed in Rule 2201. 3.11 Stationary Source: as dermed in Rule 2201. 3.12 Unloading Rack: any aggregate or combination of equipment or control equwmentthatunloads organic liquid from a storage 

### WIi\k into 

### tank trucks, trailers. or railroad tank cars. The unloading rack is the portion of the connection system from the connection at the inlet of the organic liquid pump to and including the hose and connector at the delivery tank. 4.0 Precluded Source Categories EmissioflS Uaits P'tot ReqHiriflg 

### l

.... ',llrittea Pennit 

### 4.1 No Authority to Construct or Permit to Operate shall be required for the following source categories that are specifically precluded from District permitting requirements by state or federal law: 4.1.2 Any equipment used in agricultural operations in the growing of crops or the raising of fowl or animals, except that located in the area that is, in whole or in part, south of the Sixth Standard Parallel South, Mount Diablo Base and Meridian, maybe 

### required to obtain permits for the operation of orchard and citrus grove heaters. In 

### no event shall an owner be denied a permit for such heaters if the heaters produce unconsumed solid carbonaceous matter at the rate of one gram per minute or less (Health and Safety Code, Section4231O(e)).

SNUAPCD 

### 2020 - 3 AdoptedAmendments to Rule 2020 9/17/98\

4.1.3 Any structure designed for and used exclusively as a dwelling for notmore than four families and any incinerator used exclusively in connection with such structure (Health and Safety Code Section 4231O(b) and (c)).
4.1.4 Barbecue equipment that is not used for commercial purposes, <Health and Safety Code Section 4231O(d)).
4.1.5 Motor vehicles as dermed by the Vehicle Code ofthe State ofCalifornia (Health and Safety Code, Section4231O(a)), but not including any emissions unit mounted on such vehicle, that would otherwise require a permitunder the provisions of the District Rules and Regulations.
4.1.6 Locomotives. aiJ::planes. and watercraftused to transportpassengers or freight. This exemption is not intended to apply to equipmentused for the dredging ofwaterways or to equipmentused in pile driving adjacent to or in waterways.
4.1 An :Authority to COfl5tnlct or Perrn:i:t to Operate shall notbe required for an)' emissions unit, listed 

### in Section 5.0, ulliess:
4.1.1 The emissions unit is subject to BPi'. 40 CPR, Part 60,**~tew** Source Perfofffiflnce Standards O'l"SPS), or BPA 40 CPR, Part 61,**~tational** Emission Standards for Hazardous Air Polffitants (NESHAPS); 4.1.2 The APCG makes a deteI'Il'l:ifHition that a permit shall be required because 

### the emissions unit may not operate in compliance with all District rules and regulations; 4.1.3 The O'tvner!operator specifically requests a ",,,rittenpermit be issued; Of 4.1.4 The emissions unit is proposed 

### in the control ofemissions from a soil or ground'Nater deeontaminationproject.
4.2 AnAuthority to Constnlct or Perrn:i:t to Operate shall notbe required for the following: 4.2.1 Any emissiofl5 unit, not specificall)' listed 

### in: Section 5.0, if the uncontrolled emissions of any air contaminant does not exceed two (2) pounds 

### in any 24 hour period; 4.2.2 An)' equipmentused 

### in agricultural operations 

### in the growing ofcrops Of 

### theraising offowl or animals, except that located 

### in the area v/hich is, 

### in whole or 

### in part, south of the SuM Standard Parallel South, Mount Diablo Base and Meridian, may be required to obtaii'!: permits for the operation of orchard and citrus grot,'eheaters. In no event shall an operatorbe denied a pennit for such heaters if

### theheaters produce unconsumed solid

SJVUAPCD 2020 - 4 AdoptedAmendments to Rule 2020 9/17/98ellfBoflRceoHs matter at the rate ofone (1) gramper minute or less (He9:lth aOO Safety Code, SectioR 42310(e)); 4.2.3 Any strecMe designed for andHsed eJ£clHsively as a dwelling for oot morc thaft foHr (4) families aRd 

### !HlY inciHerator used eJ£clusively 

### ifleonnectioft with sHeh stRiCRIre (Health !Hid Safety Code SeetioR 42310(8) and (c)); 4.2.4 BaraeeHe eqaif)meRt which is flOt used for cOfIHllercial purposes, (Health 

### ftfld Safety Coas SeotioR 42310(a)); 4.2.5 Motor vehicles as defined By ilie Vehicle Code ofthe State ofCalifornia (Health and Safety Code, SeetioR 4231O(a)), BHt flOt if1€ffidingafl)' emissioftS HIlit fHOHfited OR such 'femcle, 

### that "'lOHld otherwise reqHire a permitHOOer the provisioftS oftheDistrict RHles aOO Regulations; or 4.2.6 Repairs or maIDteflaflCe flOt involving stFHemr9:l chaRges to aftY emissions umt for 'h'ftieh a permit has BeeRgraflted (Healtll!Hid Safe£)' Code, SeetioR 4231O(t)). 4.2 Record1Eeeping shaH Be reElliirsa to verify or Hlftintainfifty eJ£emptioRfor 'lfftich fue eJ£emptioR is Basea OR a maxllnam aail)' limitatioR.
5 .0 ExemptioR List Sigmficaflt Categories
Too folImving source 0fleratioflS shall BeeJ£eHiflt from OBtaining aR .Authority to Construct or a Permit toQperate: 5.1 ComBustioR aOO HeatTraI15ferSystems 5.1.1 Steam generators, steam sUflerherHers, water boilers, water heaters, stcem eleaflCrs, aOO closea indirect heat transfer systems '''''meh ha're a maximum input heat rating of 5,000,000 BTU fler hour (gross) or less fiftd is equiflflcd to be rrred eJ£clusively with natural gas, liquefiea flctroleum gas, or lift)' eomBinatioR thereof provided the fuel eofltain5 RO more tflaR fiTle (5) percent B)' 'Neight hydrocaraoflS heaYier 

### thaRbutane (as determinea By test method ASTM E 260 73) aOO RO more thaR 0.75 grains oftotal sHlfur fler 100 staRdard cubic feet ofgas (as determined by test £Rethod ASTM D 1072 80). 5.1.2 PistOR type iffiefflRl combHstioR eagines vlith a manufacturer's maximum cofltiffiiOUS rating of50 BrakiHg horsepo\','er (bhfl) or lcss. 5.1.3 Gas mrbiHe eagiHes 

### ","ith a maRi:fl'l:um heat influt rating of 3,000,000 BTU per hour or less at ISO StaRdard Da-y ConditioI15. 5.1.4 EquipmeRt used eJ£c!usivel)' for sflace heating, other thaR Boilers. 5.2 Vehicles Locomotives, ai:qJlanes, and watercraft Hsed to traI15port passeRgers or freight. This e)wmptioR is ROt inteHded to apply to equipmeftt used fer the dreaging of waterwli)'s or to equipmeftt used in pile driving adjaceHt to or in v/aterways. 5.3 Cooling Tovrers

SNUAPCD 

### 2020 - 5 AdoptedAmendments to Rule 2020 9/17/98